gb2312 和 unicode 间的编码转换
下面的例子是将 gb2312 转换为 "全"这种形式
(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/php/)php4.3.1以后的iconv函数很好用的,只是需要自己写一个uft8到unicode的转换函数
查表(gb2312.txt)也行
<?
$text = "电子书库";
preg_match_all("/[x80-xff]?./",$text,$ar);
foreach($ar[0] as $v)
echo "&#".utf8_unicode(iconv("GB2312","UTF-8",$v)).";";
?
<?
// utf8 - unicode
function utf8_unicode($c) {
switch(strlen($c)) {
case 1:
return ord($c);
case 2:
$n = (ord($c[0]) & 0x3f) << 6;
$n += ord($c[1]) & 0x3f;
return $n;
case 3:
$n = (ord($c[0]) & 0x1f) << 12;
$n += (ord($c[1]) & 0x3f) << 6;
$n += ord($c[2]) & 0x3f;
return $n;
case 4:
$n = (ord($c[0]) & 0x0f) << 18;
$n += (ord($c[1]) & 0x3f) << 12;
$n += (ord($c[2]) & 0x3f) << 6;
$n += ord($c[3]) & 0x3f;
return $n;
}
}
?
下面的例子是利用php将"全"这中编码转换为gb2312.
<?php
$str = "TTL全天候自动聚焦";
$str = preg_replace("|&#([0-9]{1,5});|", "".u2utf82gb(\1)."", $str);
$str = "$str="$str";";
eval($str);
echo $str;
function u2utf82gb($c){
$str="";
if ($c < 0x80) {
$str.=$c;
} else if ($c < 0x800) {
$str.=chr(0xC0 | $c6);
$str.=chr(0x80 | $c & 0x3F);
} else if ($c < 0x10000) {
$str.=chr(0xE0 | $c12);
$str.=chr(0x80 | $c6 & 0x3F);
$str.=chr(0x80 | $c & 0x3F);
} else if ($c < 0x200000) {
$str.=chr(0xF0 | $c18);
$str.=chr(0x80 | $c12 & 0x3F);
$str.=chr(0x80 | $c6 & 0x3F);
$str.=chr(0x80 | $c & 0x3F);
}
return iconv('UTF-8', 'GB2312', $str);
}
?
或者是
function unescape($str) {
$str = rawurldecode($str);
preg_match_all("/(?:%u.{4})|&#x.{4};|&#d+;|.+/U",$str,$r);
$ar = $r[0];
print_r($ar);
foreach($ar as $k=$v) {
if(substr($v,0,2) == "%u")
$ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,-4)));
elseif(substr($v,0,3) == "&#x")
$ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,3,-1)));
elseif(substr($v,0,2) == "&#") {
echo substr($v,2,-1)."<br";
$ar[$k] = iconv("UCS-2","GB2312",pack("n",substr($v,2,-1)));
}
}
return join("",$ar);
}
$str = "TTL全天候自动聚焦";
echo unescape($str); //out TTL全天候自动聚焦
利用javascript来转换
<style
BODY {
FONT-SIZE: 9pt; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; P